This strange weather phenomenon happened in Newfoundland where the waves were actually frozen as they crashed on the beach [1:00]
Possible explanation: This phenomenon, while visually stunning, can be easily explained. It likely wasn’t extremely cold when this occurred, as you can tell by looking at the still liquid mudpuddles and also by the guy in shorts. It was probably early in winter, when the surface of the water in the bays and inlets near these small communities was just beginning to freeze. This thin layer of ice on the surface of the water was thin enough that it was easily broken up by waves on a windy day, and those waves deposited those ice chunks on the beach as they crashed.